note:1. Please recognize the size and choose a suitable size to avoid inconvenience when replacing.2. If you have any questions about the size, please write to us and we will answer you in detail.Specifications:High quality mountain/road bike tire inner tube.Made of butyl, solid and durable, won't leak air.Make your bike more excellent.Item Name: Inner TireMaterial: ButylFeatures: Thicken, Durable, Bike AccessoriesSize: 12", 14", 16", 18", 20", 22", 24", 26" (Approx.) (Optional)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Inner Tirenotes:Please check the size of bicycle tires before ordering.For manual measurement, please allow an error of 1-3cm.